Printing press



' Mays, 1936.

DLKEM ETl A1.

PRINTING PRESS Filed Oct. 24, 1.934

4 Sheets-Sheetl May 5, 1936. i

H. D.Y KEM ET AL PRINTING PRESS 9 Filed Ot. 24, 1954 4 sheets-sheet 2W1TNEssEs` ATTORNEYS May 5, 1936. f a,... "D, ,KEM Er AL* 2,039,909

PRINTING PRESS Filed Oct.. 24, 1934 '44 Sheets-Sheet 3 @5f/W4 7]' 3fZ857 55 54 541i INVNTORS ZLJCem wlTNEssEs l Ze y rf- Jose/'U71I/JarshaZZJr:

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PRINTING PRESS Filed Oct. 24, 1934v 4 Sheets-Sheet 4 rrNEssl-:s HuxleyD, Kem

ATTO RN EYS Patented May 5, 1936 UNITED s'l'n'rasy PRINTING PRESS HuxleyD. Kem and Joseph R. Marshall, Jr., Medford, Oreg.

Application October 24, 1934, Serial No. 749,831

Y 5 Claims. (Cl. 101-123) This invention relates to stencil printingmachines and has for an object to provide an improved constructionwherein a large print or a small print can be secured as desired.

Another object of the present invention is to provide a stencil printingmachine which may utilize paints, lacquers, inks, liquid o'r semi-liquidmaterials, and colors upon wood, metal, cloth,

' cardboard, paper or other materials to form letterheads, illustrationsor other configurations or protecting coatings in one or several colors.

An additional object, more specically, is to provide a machine which mayuse the stencil and method set forth in the patent issued to Huxley D.Kem, No. 1,478,745.,

A further object of the invention is to provide a construction ofstenciling machine which will greatly simplify the stenciling operationwhile at the same time providing a construction which A Figure 2 is atop plan view of the machine i shown in Figure 1;

Figure 3 is a fragmentary sectional view through Fig. 1 approximately onthe line 3 3, the same being on a slightly enlarged scale;

Figure 4 is a sectional view through Figure l on the line I4, the samebeing on an enlarged scale;

Figure 5 is a sectional' view through Figure 1 on the line 5 5, the samebeing on an enlarged scale;

Figure 6 is an enlarged fragmentary side view of the squeegee carriagedisclosing certain features of the invention;

Figure 7 is an elevation of the opposite end of the carriage shown inFig. 6;

Figure 8 is a sectional view through Fig. 2 approximately on the line 88, the same being on an enlarged scale;

Figure 9 is a diagram showing wiring sys;

tem used in Fig. 1;

Figure 10 is a detailed fragmentary sectional view' illustrating how theshift lever coacts with,

provided with suitable uprights and suitable transverse bars to supportthe various parts of the machine. It will be observed that the frame Iincludes a number of legs 2, longitudinal bars 3, and one or moretransverse bars 4. Connected to the top of the posts 2 is an angle barframe 5 arately bolted to the wooden frame 6 and additional bolts usedfor securing the depending section 'l and the stencil screen 8 in place.The stencil screen 8 may be of any desired type of stencil screen usedin machines of this type as, for instance, the stencil screendisclosedin Patent No. 1,478,745, issued to Huxley D. Kem on December25, 1933.

In using the stencil screen it is customary to spread ink or othersuitable coloring matter over the screen to secure the desiredimpression on paperv or other material arranged therebeneath.

In the present invention efficient means have been provided for securingthis action and the parts have been so arranged that a very largestencil impression may be secured or a comparatively small one. Inaddition the spreading means have been so formed that an impression Sorprint may be secured on each back and forth movement ofthe spreadingmeans.

tables 9 and lll, table 9 being comparatively small,

while table i0 is comparatively large. Both tables As illustrated inFig. 1 there are provided 35 print is desired. .At the lower part ofFig. 1 may 40 be seen a shaft Il which is operatively connected to tableil as hereinafter described, and this Y shaft is secured by couplings I2to shaft Il, coupling I2 being adapted to be in coupling position whenboth the tables 9 and III are used, but when 45 coupling l2 is moved todisengaged position shaft Il and table III and associated parts willremain idle, even though table 9 and associated parts are functioning.It will be noted that all of the f driving or actuatingv means areassociated virlth table 5.aothatitisonlynecessarytocouple or uncouplethe coupling l2 when it is desired to use or discard table Il. These twotables are arrangedbelow the stencil screen 8 and areadapted to hold oneor more sheets 'of paper ortis frame 5 by bolts or yother means, saidtracks being shown in section in Fig. 4. These tracks carry at therespective ends sprocket wheels I5 and I1 for accommodating therespective chains I8 and I9, as illustrated particularly in Fig. 2.Sprocket wheels I5 are rigidly secured to shaft 20, which shaft issupported by the tracks I4 and I5 and,also by suitable brackets 2l and22 secured to frame 5. A pulley wheel 23 is rigidly secured to shaft 29and accommodates the belt- 24-which passes over a suitable drivingpulley 25 connected to and operated by an electric motor 25. By reasonof this construction it will be seen that whenever motor 25 is operatedthe chains I8 and I9 will bemoved. Duringthe operation of the machinethese chains are adapted to be moved to a certain extent in onedirection and then reversed to be moved to the same extent in theopposite direction. Thisis done by reversing the motor 25 ashereinafterfully described. Brackets 23 and 29 are secured to the respective chainsI8 and I9, bracket 25 carrying a plate 30, while bracket 29 carriesplate 3I. These two plates with certain other parts formfthe squeegeecarriage 32 adapted to carry the respective squeegees 33 and 34 whichwill be hereinafter more iully described. A shaft 35 extends from oneside of the machine to the other, as shown in Fig. 1, and through bothplates 30 and 3i, said shaft being rotatable in these plates andcarrying at the end near plate 3| a reversing arm 35, and at theopposite end a locking segment 31.

'I'he reversingwarm 35. as shown in Figs. 1 'and' 6,15 edaptedt strikeeither of the abutments sa or 39 according to the end of the machine atrwhich the squeegee carriage is positioned.

When travelingto the left, as shown in Figs. -2 and 6, the arm 35 willstrike the abutment 35 which is fastened in any desired manner to theframe 5. When the parts aremoving to the right, as shown in Fig. 2, arm35 will strike abutment 39. The striking of these abutments will causeshaft 35 to be 'swung to a certain extent and thereby swing the squeegee33 fromthe position shown in Fig. 8 upwardly and the squeegee 34downwardly. Plate 3i is provided with upper and lower wheels 40 and 4Iwhereby this plate may readily ride on the rail I5. Plate 35 is likewise.provided with rollers 42 and 43 which ride on the rail I4, as shown inFig. 4. 'I'he locking segment 31, as shown in Figs. 2 andA 7, -isrigidly secured to shaft 35 and is provided with notches 44 and 45. Apawl 45 is pivotally mounted at 41 on plate 30 and is provided with aturned-up end 45 adapted to iit into either of the notches 44 and 45.A'This pawl is also provided with an inturned extension 49, as shown inFig. 2, vwhereby it may strike the inclinedstop vv5I) when the parts aretraveling to the right, and

against the inclined stop '5I when traveling to the left. 'I'he end ofpawl 45 having the extension 49 is heavier than the opposite end, sothat the turned-up end 43 will automatically move into and remain in oneoi' the notches of the locking segment 31 unless moved therefrom.

When the parts have been moved to substantially the position shownl inFig. 7 the arm 35 will begin to function and swing the squeegee to.thepesitien opposite that shown mfFig. s, and

also swing the segment 31 until the notch 41 is beneath the extension48, whereupon. after the extension 49 ofpawi `45 haspassed over theabutment 5I) it will drop down and then move back to the left until itis free. As soon as it drops down the extension 43 will move into notch45 and thereby lock the squeegees 33 and 34 against swinging movementuntil they reach -the other extreme end of their travel.v It will benoted that the inclined stops 55 and 5I are swingably arranged but theswinging movement is limited and normally they are in the position shownin Fig. 1.- As the pawl`45 moves under these stops they will swingupwardly slightly to allow this to take piace and will then move back tothe position shown in Fig. l.

The squeegees 33 and 34 are illustrated particularly in Fig. 8 and areidentical in-construction .and really form a single unit which isvmadeupl of bar 52 held in pla by suitable bolts 53, which 33 is functioning,and at an opposite angle when the plate 34 is functioning. The squeegee34 is provided with auxiliary squeegees 55 and 55 which are arranged ata ,slight angle, as shown in Fig. l

2, and only function when the squeegee is moving to the left. This is totake care of any accidental overflow of ink or coloring matter so as todirecty the same back onto stencil screen 3. It will be understood fromthe abovethat when the chain is moving to the right, as shown in Fig. 2,the squeegee 33 will-be functioning and the parts will travel to theright end ci the machine until pawl 45 and arm 35 function to releasethe squeegee and reverse the parts ready for a return trip.

In order to make the return trip the sprocket chains I5 and I9 must bereversed and.also the motor 25. To accomplish this there is provided arod 51, shown in Fig. 2, guided in suitable guide brackets 55 carried byframe 5. A pair of abutments 59 is secured to the rod 51 and a reverselever 30 is pivotally mounted at 5I on frame 5 and extends between theabutments 53 so as to be swung by these abutments or rather to movethese abutments when the bracket 23 engages and moves the arm. It willbe seen from Fig. 2

that as the bracket 23 moves to the right it will strike thereverselever 50 and swing the same to an opposite angle. 'I'his will move rod51 to the right and shift the arm 52 (Fig. 9) so that the contact end 53will move ofi.' contact 54, engage the comparatively long contact 55 fora moment, and then move onto contact 55. The switch arm 55 and thebracket 23 are so positioned in relation to the abutment 50 that thereverse action takes place immediately after or -substantiallysimultaneously with the reversing of the squeegees 33 and 34.

In addition to the reversing action Just described there isl provided apump and certain other parts i'or distributing ink and other coloringmatter to the stencil screen. As illustrated in Fig. 2 there is provideda rod 51 supported by suitable guides 53 carried by frame 5. 'Ihis rodat the right hand end is provided with an abutment 39 rigidly secured torod 51, and between this abutment and one of the guides 53 there ispositioned a spring 13 which tends to hold the rod and abutment in theposition shown lin Fig. 2. When the squeegee ;and associated parts moveto the right the hook 1I which is rigidly secured to shaft 35 willengage the abuttain timed relation to the movement of the cured at thelower end to shaft I3. As the gearment 88 and move the same against theaction ofspring 18,thus moving rod 81 to the right and holding the samethere until the squeegee has been reversed. As rod "moves to the rightit will bring the spring 12 under tension. This spring is connected withbell crank lever 13, said lever being pivotally mounted on frame 5 withone end connected with the piston 14 extending into the distributingtube 18. An ink reservoir 18 is mounted to discharge ink by gravity intothe distributing tube 15, but when the piston 14 is forced into the tube15 the inlet from the reservoir is closed but the ink in the tube isbrought under pressure and is discharged with some considerable forceout the various nozzles 11, the

vopening in these nozzles being regulated by a suitable valve 18. Inthis way whenever the parts move to the extreme right hand end of themachine a supply of ink will be discharged onto the stencil screen 8near the left hand end, which ink is later engaged by and spread overthe stencil screen by the squeegee plate or doctor 33'.

As soon as the reverse lever 88 has been moved to its reversed positionthe parts will be moved to the dotted position shown in Fig. 9 and themotor 28 will be reversed, whereupon the parts will be reversed and willmove back to their first position, namely, the positionnear the lefthand end of the machine, as shown in Fig. 2. As soon as the partsapproach the left hand position the pawl will coact with the inclinedabutment 5| for releasing the locking segment 31. and also the lever 38will approach and begin to be moved by its reaction with the stop 38.

' After these parts have functioned or substantially at the end of thefunctioning action, bracket 28 will engage the reverse lever 88' andmove rod 51 in the opposite direction, whereupon motor 28 will be againreversed. This action is carried out as long as the machine functions.

While the above various actions take place the parts beneath the frame 8also function in cersqueegee and other parts. e For instance, it isnecessary for the tablesl `and -|8 to move downwardly and thenoutwardly-to the position shown in Fig. 3 to receive a new sheet ofpaper or other material', and then inwardly and back against the stencilscreen 8. `It will be understood that upon each back and forth movementof the squeegee this takes place, namely, the parts move to the positionshown in Fig. 3 upon each movement of the stencil to the right, and thenagain upon each movement to the left, so that a new print is securedupon each cycle of reciprocation. Separate means 'have been provided formoving the parts upwardly and downwardly outwardly and inwardly, thoughthey are both associated with the same driving mechanism and the sameactuating gear. As shown in rig. 1 the varian,

parts for shifting the tables are driven by the motor 18 which is anelectric motor of any de.- sired kind, and which is provided with asmall pulley 88 on which is mounted a belt 8l, said belt also passingover the large pulley 82, whereby said large pulley is caused tofunction. Av

groove 88 accommodating the pin 81 carriedby.

the lever or arm 88, which lever is rigidly'sewheel 85 rotates the ann88 is caused to swing back and forth and shaft |3 to rock.` If theclutch l2 is functioning the arm 88' will swing back and forth in asimilarmanner to arm 88.

Arm 88 is pivotally connected at the upper end i to a link 89 which linkis pivotally connected at 98 to the table 9. It will be seen that whenarm 88 swings to the right, as shown in Fig. 4, certain parts will bemoved outwardly, as shown in Fig. 3. When the arm swings in an oppositedirection the parts will move back towards the right from the positionshown in Fig. 3 to that shown in Fig. 4. While the pin 81 is in thelarge arc 9| the table 9 will remain in its inner position,I and whenthe pin 81 is in the small arc 92 of groove 86 the table 9 will remainstationary are two sets of legs and associated parts, and asl therespective parts are identical in structure a description of one willapply to both.

The various 'legs 93 are rigidly connected with the supporting bar 94,which bar has a bracket carrying a roller 98.- Roller 98 is positionedto roll against the end surface of track 91, whichl A track is parallelwith the ylower track\.98..and connected thereto by suitableconnecting-straps or legs 99. A floating support |88 is carried by thetracks 91 and 98, said floating support compris-- ing a bar |8| on whichrollers |82, |88 and |88 are mounted, said rollers normally rolling onthe upper surface of track 98. Bar |8| has an upstanding section |85carrying roller |86, whichrolls against the under surface of top rail91. As

table 8 and associated parts are moved in and out, the various rollersfunction to permit an easy sliding action, and also function with theother parts tc-maintain table 9 horizontal.

While table 9 and associated parts are moving inwardly and outwardly,the supporting rails 91 and 98 are stationary, but are adapted to bemoved upwardly to the position shown in Fig. 4

sov

when the stencil is to be used, and later downwardly to the positionshown in Fig. 3. This action is repeated as the device continues tofunction. In order to move tracks 91 and 98 upwardly and downwardlythere is provided a pair of double toggles |81 and |88 mounted at4 the Yrespective ends of the tracks on suitable brackets carried at one end bybar 8, and connected by suitable brackets at the opposite end to track98. Toggle |81 is pivotally connected at |89 to link ||8 and to toggle|88 at An auxiliary link I |2 is also pivotally connected to toggle |88at said auxiliary link being pivotally connected at `||3 to the outerend ||4 of lever ||5, said lever being pvotally vmounted at H6. Mounting||5 is a shaft having the ends rotatably mounted in a suitable ittingcarried by bar 8, so that the two sets of mechanisms connect with table9 and will function simultaneously and in an identical manner, eachvmechanism being, as above set forth, identical to that shown in Fig.-3.

Where the table |8 is functioning' the clutch ||1 is engaged so that theshaft H8' may function Y similar to shaft or pivotal structure ||8 inorder *Y .that the respective mechanisms ||8 and ||9 may operate in anexact manner to the mechanisms |20 and |2|, which latter mechanisms areidentical and also identical with mechanisms ||8 and ||9.v The lever||5, as shown in Fig.4, is connected by a link |22 to the upper end oflever |23 which lever is pivotally mounted at |24. The lower end |25 oflever |23 is pivotally connected at |26 toa reciprocating bar |21, whichis pivotally connected at |29 to link |30, which link in turn ispivotally connected at |3| to arm |32, said arm being pivotally mountedon-shaft 83 and provided with an extension or abutment |33. A foot pedal|34 has one end pivotally connected to the bar |21 at |29, said footpedal being normally supported in an elevated position by spring |35 sothat the abutment |28 may be positioned as shown in Figs. 4 and 5 duringnormal operation of the machine. When it is desired to prevent rising oftable 9 a person may place his foot on pedal |34 and depress the same sothat the abutment |28 will be moved out of. the path of movement of theactuating block |36, said block being rigidly secured to the actuatingor driving gear 85. When the gear 85 rotates as indicated by the arrow|31 in Fig. 5, which is the only direction 'in which it does rotate; theblockv |36 will naturally rotate therewith and will eventually engagethe abutment |28 and move this abutment, pedal |34, and bar |21. Thisaction will also cause the link to swing arm |32 and extension |33 sothat extension |33 will project into the path of movement, of the block|35. Continued movement of block |88with gear wheel will, a littlelater, cause the block |36 to strike the extension |33 (Fig. 5) and moveall the parts back vto their normal position.

When the'block. |38 moves the abutment |28, for instance, to theposition shown in dotted lines in Fig. 4, such movement will operate thevarious levers just mentioned, so that the lever ||5 will cause thetracks 91 and 98 to move upwardly and the table 9 to press the paper orother article carried thereby against the stencil screen 3. The partswill remain in elevated position until the block |36 strikes theextension |33, whereupon all these levers, links and thelike will bemoved in the opposite direction and the toggle's |08 and |09 will beagain moved to the position shown in Flg.,3. This action is repeated oneach rotation of the gear wheel 85 unless pedal |34 is depressed. Whenthis occurs the block |36 will naturally not engage abutment |28 and,consequently, table 9, and associated parts will not be raised to ele-`vated position. As there is very little or no pressure on the'table 9 itwill remain in its elevated position through the friction ci' thevarious parts assisted by the weight |38, which weight is pivotallymounted on the`lever 39 plvotally carried at |40 by a suitable bracket,said lever at one end being pivotally connected with link Y||0. It willbe evident that the weight |38 may be of any size and weight, so thatthe parts may function in the proper manner and as just described.

It will be observed that the back and forthv in proper order arparticular electric circuit is provided. as shown in Fig. 9, whichcontrols certain ofthe parts. The motor 13, shown in Fig. 1, operatescontinuously, and the driving gear also operates continuously. but themotor 28 is adapted to be operated at certain- -times and then stoppedand. then reverse and operate in the opposite direction for a certaintime and then stop. This is -in order to hold the squeegee stationary ateach end of its travel while the table 9 moves upwardly, downwardly andthen back and upwardly. In order to secure this result the parts arearranged as shown in diagram in Fig.` 9.

From this diagram it will be seen that the reversing rod 51 reversesswitch 82 and thereby secures certain results. In addition there areprovided stationary contacts |4| and |42 on frame tact |42, wire |45,post |48, knife switch |41,

post |48, wire |48 to switch arm 62, contact 64, wire |50, motor 26 andback through wire 5| to the source of current |447., As' long as currentis owing in this direction the squeegee and associated parts will bemoving to the right, as shown in` Fig. 9. As soon as bracket 28 strikesthe reverse lever 50 switch arm 62, as heretofore described, will moveover rather quicklyto contact 65 and along this contact and finally overto contact 68. As soon as arm 52 leaves contact 84 the circuit Justdescribed will be deprived of current though the momentum of the partswill be sum-l cient to permit the reversing arm 60 to function as justdescribed. As the switcharm 82 engages contact 65 current will flow froma source of current 44 to contact |44 and then through contact 43 andcontact- 42, wire |45, post |48, knife switch |41, post |48, wire |49,switch arm 52, contact 84, wire |52, the winding of the electromagnet|53, wire |54, back to wire |5`|. Current ilowing in this circuit willenergize magnet |53 and cause the same to pull the armaturel |55 so asto swing-the catch |55 downwardly whereupon spring |51 will quicklyswing the knife switch |41 outwardly and thereby break the circuit atthis point.

At substantially the same time that the circuit is broken bythe knifeswitch the lever 5 and associated parts will function to lower the table9 so as to break the engagement with contact |43. This is broken eithersimultaneously with or slightly before arm 82 moves onto contact 88. Thetable 8 will move downwardly a's heretofore described, and thenoutwardly and remain in ment, however, the arm |58 willengage arm |58carried by the knife switch |41 and force this knife switch downwardlyso that the catch |58 may move vupwardly and interlock therewith.

magnet |53 being deenergized at this time asv the arm 82 has moved oncontact 85. 'I'his restores the circuit through contacts |4|, |42 and|43,

motor 28, and contact 88 and associated parts, so that when the table 9moves upwardly again the circuit will be completed for motor 28 but thecurrent will drive thev motor in a reverse direction, whereupon thesqueegee and associated parts will be moved to the left `until itstrikes the reversing arm 80', and the same operation will be repeated.It will be observed that evenl though the contacts .|4|, |42 and |43 arein engagement, after the squeegee has reached either of its' extremepositions, no current will be supplied as the movement of the switch arm62 past and in engagement with contact 65 will cause the. magnet |53 tofunction and open the circuit at this point, which circuit remains openuntil table 9 moves downwardly. Table 9 moves downwardly and breaks thecircuit at contact |43 before the switch arm l58 actuates the switch Hl,

closing the same.

It will be noted that when the machine is once started it willautomatically function continuously until the current is switched offfrom motor T9. It will also be noted that the squeegee is automaticallysupplied with ink or other coloring matter and that it moves down to oneend of the frame, remains stationary there for a given period, and thenmoves back to the other end where it remains stationary for a certainperiod. Upon each movement of the squeegee a print or impression issecured. The shafts Il and H6' operate to cause table Ill to be actuatedin absolute unison with table 9. However, when it is desired to usetable 9 alone the clutches I2 and lll are disengaged. In addition, inorder to shorten the movement of the squeegee it is necessary to movethe abutmentll to the left and to a position near the end of table 9. Itwill also be necessary to move the reversing arm 69 to a suitable placenear table 9. The abutment 39Aand members 68, 69 and 10 should belikewise moved down to a point near the table 9. When this has been donethe squeegee will merely move back and forth over the table 9 but, asshown-in the drawings,-the various parts have been positioned so thatthe squeegee will move over ,both parts ofthe tables 9 and l0. In eitherevent, the action is the same except that one produces a large print andthe other a small print. Also, where small prints aref desired, it ispreferable to use only table 9 and move the reversing parts etc. neartable 9 so that the device may operate at a higher rate of speed becauseof the shortness of travel of the squeegee.

We claim:-

1. A stenciling machine of the character described, including aplurality of supporting legs, a frame carried by said legs, a stencilscreen carried by said frame, a table adapted to hold a sheet of paperor other material against said screen to receive an impression, aplurality of means for raising and lowering saidtable, a plurality ofmeans for moving said table outside of said frame for holding the tableoutside of said frame for a given time, and then moving.

the table back within the frame while in a lowered position, a squeegeefor spreading coloring matter over said stencil screen, power actuatedlmeans for moving said squeegee over said stencil2.aatencilingmachineincludingascueegee,

having a pair of spreading plates, a rock shaft rigidly secured to andvsupporting said plates, a pair of carriages for supporting said rockshaft, each of said carriages having a plurality of wheels, there beingwheels arranged near the upper part and near the lower part, a track foreach carriage, said wheels fitting against the upper and lower surfacesof said tracks, a traveling member' connected with each of saidcarriages .independently of said rock shaft for moving the carriagealong said tracks, a reversing arm. rig-'- idly secured to said rockshaft adjacent the ends of said tracks engaging said reversing arm for'causing an actuation thereof as the carriage moves, and means forrocking said 'spreading plates, said means functioning at each end ofthe travel of said carriages whereby one plate will function -when thesqueegee is moved in one direction and the other plate when the squeegeeis moving in the opposite direction.

3. In a stenciling machine of the character described, a stencil screenand means for applying coloring matter thereto, said means including asqueegee, means for moving the squeegee over-the stencil screen, aplurality of nozzles for discharging liquid coloring matter onto thescreen, a reservoir for supplying liquid coloring matter to saidnozzles, and a pump for causing the liquid coloring matter to beprojected' from said nozzles, said pump being operatively associatedwith said -squeegee with the parts positioned to cause the pump t0function when the squeegee has moved to its extreme farthest distancefrom said nozzles.

4. In a stencil printing machine, a stencil screen, a squeegeepositioned to spread coloring matter .over the screen, a shaft carryingsaid squeegee, a carriage at each end of said shaft for supporting the.same, a track for each of said carriages, a chain secured to each ofsaid carriages extending to therespective ends of the tracks, a sprocketwheel at the end of each of said tracks, said sprocket wheelsaccommodating said chains, a drive shaft connected to two of saidsprocket wheels, power means vfor rotating said drive shaft, a pair ofreversing levers for reversing said power means, and means extend@ ingfrom one of said carriages for actuating the reversing levers as thesqueegee approaches the respective ends of said stencil screen.

v5. A'stenciling machine of the character described, including asupport, a frame carried by said support, a stencil screen carried bysaid frame, a table adapted to hold a sheet of paper or other materialagainst said screen to receive an impression, a squeegee for spreadingcoloring matter over said stencil screen, power actuated means formoving said squeegee over said stencil screen, and means Vincluding anelectric switch for shutting on said power actuated means on

